UK Law Enforcement Is Against "3-Strikes"
Now that the UK is discussing plans for some form of 3-strikes regime to discourage file-sharing, TechDirt reports that the fans of due process have picked up unlikely allies: the law enforcement and spying establishments fear that a 3-strikes policy would result in far more encryption on the Net, greatly complicating their jobs. "Of course, they're not as concerned about due process and civil rights, as they are about making it more difficult to track down criminals online: 'Law enforcement groups, which include the Serious and Organized Crime Agency and the Metropolitan Police's e-crime unit, believe that more encryption will increase the costs and workload for those attempting to monitor internet traffic. ... A source involved in drafting the Bill said that the intelligence agencies, MI5 and MI6, had also voiced concerns about disconnection. "The spooks hate it," the source said.'" The Times (UK) Online has more details.
I'd hazard a guess that the real issue these agencies have is about increased use of anonymous communication networks such as Tor rather than just "encryption" of the content. It's almost a given that widespread adoption of Tor will have two important effects: (1) there will be larger numbers of relay or exit nodes in the network - at present it is suspected that intelligence agencies control a large number of the exit nodes (and possibly relay nodes too) in the network; and (2) greater traffic through the network will make it significantly harder to perform timing attacks on entry and exit from the mix network to correlate traffic and thus break its anonymity.
This simplistic and damaging law-making gets traction because of the people who are overly punitive.
That trait of excessive eagerness to punish is often coupled with these other traits:
Authoritarian Personality WP article
"The Authoritarians" paper